Journal
SCIENCE CHINA-CHEMISTRY
Volume 55, Issue 8, Pages 1542-1547Publisher
SCIENCE PRESS
DOI: 10.1007/s11426-012-4650-6
Keywords
chlorogallate(III) acidic ionic liquid; Lewis acid; alkylation; isobutane
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Funding
- Beijing Municipal Natural Science Foundation [2122052]
- Key Program of National Natural Science Foundation of China [21036007]
- National Basic Research Program of China [2009CB219904]
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A series of triethylammonium-based chlorogallate(III) ionic liquids with varied Lewis acidity was synthesized, characterized, and firstly applied to isobutane alkylation. The [Et3NHCl]-GaCl3 with = 0.65 displayed a potential catalytic activity for the alkylation. The addition of copper halide into the chlorogallate(III) ionic liquids dramatically enhanced the alkylation reaction. Up to 70.1% C-8 selectivity and 91.3 RON were achieved with the [Et3NHCl]-GaCl3-CuCl ( = 0.65, CuCl = 5% mol) under 0.5 MPa, 900 r/min, 15 min, 288 K using the industrial C-4 cut (isobutane/butene = 10). These results indicate that the chlorogallate(III) system may be used as a promising catalyst for the C-4 alkylation.
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